Krauss, says Oxford mathematician and philosopher of science John Lennox:
Krauss has not taken that giant step himself, since his statement, far from being a statement of science, is another metaphysical speculation - a mixture of hubris and an inadequate concept of God.Krauss has continuing trouble even figuring out the difference between science and metaphysics, as is evident from his recent book A Universe from Nothing, in which he confuses the question "Why is there something rather than nothing?" and the question "How did something come from nothing." In fact, as it transpires, he's completely confused about what the term "nothing" even means.
Apparently this confusion extends to a few other things. Says Lennox:
What does Krauss mean by "more relevant than God?" Relevant to what? Clearly the Higgs particle is more relevant than God to the question of how the universe works. But not to the question why there is a universe in which particle physics can be done. The internal combustion engine is arguably more relevant than Henry Ford to the question of how a car works, but not for why it exists in the first place. Confusing mechanism and/or law on the one hand and agency on the other, as Krauss does here, is a category mistake easily made by ignoring metaphysics.Read the rest here.